Metal recovery device for battery powder

Abstract

The utility model provides a battery powder metal recovery device, the battery powder metal recovery device comprises a reaction mechanism and a filtering mechanism, the reaction mechanism comprises a reaction tank, a stirring assembly and an exhaust assembly, the stirring assembly is mounted at the bottom in the reaction tank, and the exhaust assembly is mounted at the top in the reaction tank; the filtering mechanism comprises an acid mist treatment tank, a drainage pipe, a gas outlet assembly and a filtering layer assembly, the drainage pipe is communicated with the reaction tank and extends into the acid mist treatment tank, the gas outlet assembly comprises a sealing bearing installed at the gas outlet end of the drainage pipe, an exhaust disc and a flow dividing pipe, and the exhaust disc is connected to the sealing bearing and communicated with the drainage pipe; the shunt pipe is obliquely arranged at the edge of the exhaust disc; the filter layer assembly is arranged at the top of the acid mist treatment tank. The exhaust assembly exhausts air to the drainage pipe, so that the exhaust speed of mixed gas flow of hydrogen and acid mist is increased; the exhaust disc stirs the alkali liquor in the acid mist treatment tank, so that the alkali liquor has a better acid mist absorption effect; the filtering layer assembly can absorb and filter steam in the mixed airflow.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery material recycling, and in particular to a metal recycling device for battery powder. Background Art

[0002] Battery powder metal recovery equipment generates hydrogen during the acid leaching process. This hydrogen, released directly into the working environment without vacuum extraction, poses a risk of explosion from the hydrogen and oxygen mixture. Furthermore, the heat generated by the reaction between the metal and the strong acid can easily lead to the production of acid mist, which, if not treated and discharged, can easily pollute the environment. Utility Model Content

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a metal recovery device for battery powder that accelerates the dissolution of battery powder, has a fast exhaust speed and has a good acid mist absorption effect.

[0004] The purpose of this disclosure is achieved through the following technical solutions:

[0005] A metal recovery device for battery powder, comprising a reaction mechanism and a filtering mechanism.

[0006] The reaction mechanism includes a reaction tank, a stirring assembly and an exhaust assembly. The reaction tank is provided with a reaction chamber for containing battery powder and strong acid solution. The stirring assembly is installed at the bottom of the reaction chamber, and the exhaust assembly is installed at the top of the reaction chamber.

[0007] The filtering mechanism includes an acid mist treatment tank, a drainage pipe, an air outlet assembly and a filter layer assembly. The acid mist treatment tank is provided with a filter cavity. The air inlet end of the drainage pipe is connected to the top of the reaction cavity, and the air outlet end of the drainage pipe extends into the filter cavity. The air outlet assembly includes a sealing bearing, an exhaust disk and a diverter pipe. The sealing bearing is installed on the air outlet end of the drainage pipe. The exhaust disk is connected to the sealing bearing and connected to the drainage pipe. The diverter pipe is obliquely arranged at the edge of the exhaust disk. One end of the diverter pipe is connected to the exhaust disk, and the other end of the diverter pipe is connected to the filter cavity. The filter layer assembly is arranged on the top of the acid mist treatment tank.

[0008] In one embodiment, the filtering mechanism further includes a diverter assembly, which includes a first diverter plate and a second diverter plate located above the sealed bearing, the first diverter plate being fixed to the outer surface of the drainage tube, and the second diverter plate being fixed to the inner wall of the acid mist treatment tank, the first diverter plate and the second diverter plate being staggered in the vertical direction in the filtering cavity, and a gap being provided between the first diverter plate and the inner wall of the acid mist treatment tank; a through hole being provided in the middle of the second diverter plate, the drainage tube being passed through the through hole, and a gap being provided between the drainage tube and the through hole wall.

[0009] In one embodiment, the filter layer assembly includes a limiting ring and a filter cotton plate. There are two limiting rings. The two limiting rings are arranged on the top of the acid mist treatment tank, and the filter cotton plate is clamped between the two limiting rings.

[0010] In one embodiment, the side of the filter cotton plate adjacent to the exhaust disk is a conical structure, and the side of the filter cotton plate adjacent to the exhaust disk is further provided with a flow blocking hole.

[0011] In one embodiment, the filtering mechanism further includes a drain pipe and an injection pipe, the injection pipe is connected to the filtering cavity, the injection pipe is located above the exhaust plate, and the drain pipe is connected to the bottom of the filtering cavity.

[0012] In one embodiment, the bottom of the exhaust plate is provided with exhaust holes.

[0013] In one embodiment, there are multiple diverter tubes, which are spaced apart along the circumference of the exhaust disk. The inclination angles of the multiple diverter tubes to the corresponding center lines of the exhaust disk are the same.

[0014] In one embodiment, the stirring assembly includes a stirring motor and a stirring blade, the stirring motor is installed on the side wall of the reaction tank, the stirring blade is arranged in the reaction tank, the stirring blade is connected to the output shaft of the stirring motor, and the output shaft of the stirring motor is inclined at the bottom of the reaction tank.

[0015] In one embodiment, the exhaust assembly includes an air collecting hood and an exhaust fan. The air collecting hood cover is arranged on the top of the reaction tank. The air collecting hood is connected to the reaction tank. The air inlet end of the drainage pipe is connected to the top of the air collecting hood. The exhaust fan is installed in the air collecting hood.

[0016] In one embodiment, the reaction mechanism further includes a feed pipe and a slag discharge pipe, wherein the feed pipe is connected to the reaction tank, and the slag discharge pipe is connected to the bottom of the reaction tank.

[0017] Compared with the prior art, the present disclosure has at least the following advantages:

[0018] 1. In the metal recovery device for battery powder, the stirring assembly stirs the battery powder and the leaching acid solution, so that the battery powder and the leaching acid solution are fully mixed, thereby increasing the reaction rate and accelerating the dissolution rate of the battery powder in the leaching acid solution;

[0019] 2. The exhaust assembly exhausts air into the drainage pipe, which speeds up the discharge of the mixed air flow of hydrogen and acid mist out of the acid mist treatment tank and reduces the risk of explosion caused by excessive hydrogen content in the reaction tank mixing with air;

[0020] 3. The exhaust disk is connected to the sealed bearing and exhausts air through the diverter pipe, so that the exhaust disk rotates to stir the alkali solution inside the acid mist treatment tank, so that the mixed air flow discharged from the diverter pipe is fully in contact with the alkali solution, thereby achieving a better absorption effect on the acid mist in the mixed air flow;

[0021] 4. The filter layer component can absorb the steam in the mixed air flow, reducing the steam discharge from the acid mist treatment tank, achieving the filtration of the mixed air flow and avoiding the emission of acid mist into the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic structural diagram of a metal recovery device for battery powder according to one embodiment;

[0024] Figure 2 for Figure 1 Another structural schematic diagram of the metal recovery device for battery powder shown;

[0025] Figure 3 for Figure 1 The structural diagram of the filter cotton plate shown;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the exhaust disk shown.

[0027] Figure numerals: 10-metal recovery device for battery powder; 100-reaction mechanism; 110-reaction tank; 1101-reaction chamber; 120-stirring assembly; 121-stirring motor; 122-stirring blades; 130-exhaust assembly; 131-gas collecting hood; 132-exhaust fan; 140-feed pipe; 150-slag discharge pipe; 200-filter mechanism; 210-acid mist treatment tank; 2101-filter chamber; 220-drainage pipe; 230-gas outlet assembly; 231-sealing bearing; 232-exhaust disc; 2301-exhaust hole; 233-diverter pipe; 240-filter layer assembly; 241-limiting ring; 242-filter cotton plate; 2401-blocking hole; 250-diverter assembly; 251-first diverter plate; 252-second diverter plate; 260-injection pipe; 270-drainage pipe. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0032] like Figures 1 to 2As shown, it is a metal recovery device 10 for battery powder according to an embodiment of the present disclosure, including a reaction mechanism 100 and a filtering mechanism 200. The reaction mechanism 100 includes a reaction tank 110, a stirring assembly 120 and an exhaust assembly 130. The reaction tank 110 is provided with a reaction chamber 1101, and the reaction chamber 1101 is used to accommodate battery powder and a strong acid solution. The stirring assembly 120 is installed at the bottom of the reaction chamber 1101. The stirring assembly 120 is used to stir the battery powder in the reaction chamber 1101 and mix the leaching acid solution. The exhaust assembly 130 is installed at the top of the reaction chamber 1101. The exhaust assembly 130 is used to drive the airflow in the reaction chamber 1101 to exhaust upward.

[0033] Furthermore, the filtering mechanism 200 includes an acid mist treatment tank 210, a drainage pipe 220, an exhaust assembly 130 and a filter layer assembly 240. The acid mist treatment tank 210 is provided with a filter chamber 2101. The air inlet end of the drainage pipe 220 is connected to the top of the reaction chamber 1101, and the air outlet end of the drainage pipe 220 extends into the reaction chamber 1101. Alkali liquid is stored in the reaction chamber 1101. The alkali liquid is used to neutralize the acid mist in the airflow at the air outlet end of the drainage pipe 220. The air outlet assembly 230 includes a sealing bearing 230. 1. Exhaust disc 232 and diverter pipe 233. The sealed bearing 231 is installed at the air outlet end of the drainage pipe 220. The exhaust disc 232 is connected to the sealed bearing 231 and is connected to the drainage pipe 220. The sealed bearing 231 is used to support the rotation of the exhaust disc 232. The diverter pipe 233 is tilted at the edge of the exhaust disc 232. One end of the diverter pipe 233 is connected to the exhaust disc 232, and the other end of the diverter pipe 233 is connected to the filter cavity 2101. The filter layer assembly 240 is arranged on the top of the acid mist treatment tank 210.

[0034] In this embodiment, the stirring assembly 120 stirs the battery powder and the leaching acid solution to accelerate the reaction process. The reaction between the battery powder and the leaching acid solution generates hydrogen and heat, causing acid mist and hydrogen to be present in the air within the reaction tank 110. The exhaust assembly 130 exhausts the acid mist and hydrogen toward the drainage pipe 220. The mixed flow of acid mist and hydrogen flows along the drainage pipe 220 into the exhaust disk 232. When the mixed flow is discharged through the diverter pipe 233, it drives the exhaust disk 232 to rotate. The mixed flow enters the acid mist treatment tank 210 from the diverter pipe 233 and is neutralized by the alkaline solution. The discharged mixed gas carries heat, which easily generates water vapor within the acid mist treatment tank 210. When the mixed flow, which has removed the acid mist, flows through the filter layer assembly 240, the water vapor in the mixed flow is absorbed by the filter layer assembly 240.

[0035] In the above-mentioned metal recovery device 10 for battery powder, the stirring component 120 stirs the battery powder and the leaching acid solution, so that the battery powder and the leaching acid solution are fully mixed, which increases the reaction rate and thus accelerates the dissolution rate of the battery powder in the leaching acid solution; the exhaust component 130 exhausts to the drainage pipe 220, accelerates the speed at which the mixed air flow of hydrogen and acid mist is discharged from the acid mist treatment tank 210, and reduces the risk of explosion caused by excessive hydrogen content in the reaction tank 110 mixing with air; the exhaust disk 232 is connected to the sealing bearing 231 and exhausts through the diverter pipe 233, so that the exhaust disk 232 rotates and stirs the alkali solution inside the acid mist treatment tank 210, so that the mixed air flow discharged from the diverter pipe 233 is fully in contact with the alkali solution, thereby achieving better absorption effect of the acid mist in the mixed air flow; the filter layer component 240 can absorb the steam in the mixed air flow, reduce the steam discharge from the acid mist treatment tank 210, realize filtering of the mixed air flow, and avoid the emission of acid mist into the air.

[0036] like Figure 1 As shown, in one embodiment, the filter mechanism 200 also includes a diverter assembly 250, and the diverter assembly 250 includes a first diverter plate 251 and a second diverter plate 252 located above the sealing bearing 231, the first diverter plate 251 is fixed to the outer surface of the drainage pipe 220, and the second diverter plate 252 is fixed to the inner wall of the acid mist treatment tank 210, the first diverter plate 251 and the second diverter plate 252 are staggered in the vertical direction in the filter cavity 2101, and a gap is provided between the first diverter plate 251 and the inner wall of the acid mist treatment tank 210; a through hole is provided in the middle of the second diverter plate 252, the drainage pipe 220 is passed through the through hole, and a gap is provided between the drainage pipe 220 and the through hole wall. In this embodiment, the alkali solution of the acid mist treatment tank 210 immerses the first diverter plate 151 and the second diverter plate 252. A guide channel is formed between the first diverter plate 151 and the second diverter plate 252. The mixed airflow enters the bottom of the filter cavity 2101 from the diverter pipe 233 connected to the exhaust plate 232. The first diverter plate 151 blocks the rise of the mixed airflow, so that the mixed airflow moves along the first diverter plate 151. When it moves to the gap between the first diverter plate 251 and the inner wall of the acid mist treatment tank 210, The mixed air flow enters the guide channel formed between the first diverter plate 151 and the second diverter plate 252, and the mixed gas moves along the guide channel. When the mixed gas moves to the gap between the drainage tube 220 and the through-hole wall, the mixed air flow enters the upper part of the filter cavity 2101, and the flow path of the mixed air flow is changed by the first diverter plate 151 and the second diverter plate 252, so that the movement path of the mixed air flow in the acid mist treatment tank 210 is extended, so that the acid mist in the mixed air flow is fully contacted and neutralized with the alkali solution.

[0037] like Figure 1As shown, in one embodiment, there are multiple first diverter plates 251 and second diverter plates 252, and the first diverter plates 251 and the second diverter plates 252 are alternately arranged in the acid mist treatment tank 210. In this embodiment, more airflow conduction channels are formed between the multiple first diverter plates 251 and the multiple second diverter plates 252, and the movement path of the mixed gas in the acid mist treatment tank 210 is further extended and more tortuous, so that the acid mist in the mixed gas flow is fully in contact with the alkaline solution, thereby ensuring that the acid mist in the mixed gas flow is more thoroughly absorbed by the alkaline solution.

[0038] like Figure 1 As shown, in one embodiment, the filter layer assembly 240 includes a retaining ring 241 and a filter cotton plate 242. There are two retaining rings 241, which are disposed at the top of the acid mist treatment tank 210, and the filter cotton plate 242 is sandwiched between the two retaining rings 241. In this embodiment, the filter cotton plate 242 can absorb water vapor in the mixed gas. The two retaining rings 241 clamp the filter cotton plate 242, making it easy to remove the retaining rings 241 from above, so that the filter cotton plate 242 can be quickly replaced.

[0039] like Figure 1 and Figure 3 As shown, in one embodiment, the side of the filter cotton plate 242 adjacent to the exhaust disk 232 is a conical structure, and the side of the filter cotton plate 242 adjacent to the exhaust disk 232 is also provided with a flow blocking hole 2401. In this embodiment, the conical structure of the filter cotton plate 242 increases the contact area between the mixed airflow and the filter cotton plate 242, and the filter cotton plate 242 is more effective in filtering water vapor. When the filter cotton plate 242 absorbs too much water, the conical structure of the filter cotton plate 242 can guide the water back into the acid mist treatment tank 210. The flow blocking hole 2401 can increase the contact area with the mixed airflow, making the surface of the filter cotton plate 242 rougher, blocking and slowing down the rising mixed airflow, thereby making the filter cotton plate 242 more effective in absorbing water vapor from the mixed airflow.

[0040] like Figure 1 As shown, in one embodiment, the filter mechanism 200 further includes a drain pipe 260 and an injection pipe 270. The injection pipe 270 is connected to the acid mist treatment tank 210. The injection pipe 270 is located above the exhaust plate 232, and the drain pipe 260 is connected to the bottom of the acid mist treatment tank 210. In this embodiment, alkaline solution is injected into the acid mist treatment tank 210 through the injection pipe 270, so that the alkaline solution submerges the exhaust plate 232, thereby allowing the mixed air flow discharged from the exhaust plate 232 through the diverter pipe 233 to fully contact the alkaline solution. After the alkaline solution and the acid mist are neutralized, the alkaline solution's absorption effect on the acid mist decreases, and the alkaline solution can be discharged through the drain pipe 260 at the bottom of the acid mist treatment tank 210.

[0041] like Figure 4As shown, in one embodiment, an exhaust hole 2301 is provided at the bottom of the exhaust disk 232. In this embodiment, the mixed gas can be discharged through the exhaust hole 2301 of the exhaust disk 232, and the liquid in the exhaust disk 232 can also be discharged through the exhaust hole 2301, thereby preventing water accumulation in the exhaust disk 232 and preventing the accumulated water in the exhaust disk 232 from affecting the exhaust effect of the exhaust disk 232.

[0042] like Figure 1 and Figure 4 As shown, in one embodiment, there are multiple diverter tubes 233, which are spaced apart along the circumference of the exhaust disk 232. The diverter tubes 233 are all inclined at the same angle to the centerline of the corresponding exhaust disk 232. In this embodiment, when the mixed gas is exhausted through the multiple diverter tubes 233, the multiple diverter tubes 233 simultaneously form jet airflows, so that the multiple diverter tubes 233 simultaneously drive the exhaust disk 232 to rotate. The exhaust disk 232 has a better agitation effect on the alkali solution, thereby ensuring more complete contact between the mixed gas flow and the alkali solution, thereby improving the alkali solution's absorption of the acid mist in the mixed gas flow.

[0043] like Figure 1 and Figure 2 As shown, in one embodiment, the stirring assembly 120 includes a stirring motor 121 and a stirring blade 122. The stirring motor 121 is installed on the side wall of the reaction tank 110, and the stirring blade 122 is disposed in the reaction tank 110. The stirring blade 122 is connected to the output shaft of the stirring motor 121, and the output shaft of the stirring motor 121 is tilted and disposed at the bottom of the reaction tank 110. In this embodiment, the stirring motor 121 drives the stirring blade 122 to stir rapidly, thereby increasing the mixing speed of the battery powder and the leaching acid solution, so that the battery powder is quickly dissolved in the leaching acid solution. The tilted output shaft of the stirring motor 121 makes it easier for the stirring blade 122 to drive the mixing of the battery powder and the leaching acid solution to form turbulence, thereby ensuring more complete contact between the battery powder and the leaching acid solution.

[0044] Furthermore, there are multiple stirring motors 121 and stirring blades 122, which are spaced circumferentially along the sidewall of the reaction tank 110, and each stirring blade 122 is connected to the output end of the corresponding stirring motor 121. The multiple stirring motors 121 and the multiple stirring blades 122 simultaneously stir the battery powder and the leaching acid solution, so that the battery powder and the leaching acid solution come into contact more fully, thereby causing the battery powder and the leaching acid solution to react more quickly, thereby improving the metal recovery rate of the battery powder.

[0045] like Figure 1As shown, in one embodiment, the exhaust assembly 130 includes an air hood 131 and an exhaust fan 132. The air hood 131 is covered on the top of the reaction tank 110, the air hood 131 is connected to the reaction tank 110, the air inlet end of the drainage pipe 220 is connected to the top of the air hood 131, and the exhaust fan 132 is installed in the air hood 131. In this embodiment, the air hood 131 is used to gather the mixed air flow and guide the mixed air flow into the air inlet end of the drainage pipe 220. The exhaust fan 132 is installed in the air hood 131, which reduces the interference of the air flow on the exhaust direction of the exhaust fan 132, thereby allowing the mixed air flow to be exhausted to the drainage pipe 220 more smoothly.

[0046] like Figure 1 As shown, in one embodiment, the reaction mechanism 100 further includes a feed pipe 140 and a slag discharge pipe 150. The feed pipe 140 is connected to the reaction tank 110, and the slag discharge pipe 150 is connected to the bottom of the reaction tank 110. In this embodiment, battery powder and leaching acid are added to the reaction tank 110 through the feed pipe 140, and the waste residue and leaching acid after the reaction can be discharged by controlling the opening and closing of the slag discharge pipe 150.

[0047] Furthermore, when the battery powder and the leaching acid are added to the reaction chamber 1101 through the feed pipe 150, the battery powder reacts with the leaching solution to produce hydrogen and heat, and the exhaust component 130 exhausts the mixed gas of acid mist and hydrogen to the drainage pipe 220, so that the drainage pipe 220 flows the mixed gas into the alkaline solution of the acid mist treatment tank 210 to absorb the acid mist, thereby avoiding the emission of acid mist into the air; after the battery powder reacts with the acid leaching solution, a material mixture of acid solution containing metal ions and waste residue is obtained, and the material mixture is discharged through the slag discharge pipe 150, and the filter press performs solid-liquid separation on the material mixture to obtain a filtrate containing metal ions and residue, and then the filtrate containing metal ions is recovered.

[0048] Compared with the prior art, the present disclosure has at least the following advantages:

[0049] 1. In the battery powder metal recovery device 10, the stirring assembly 120 stirs the battery powder and the leaching acid solution, so that the battery powder and the leaching acid solution are fully mixed, thereby increasing the reaction rate and accelerating the dissolution rate of the battery powder in the leaching acid solution;

[0050] 2. The exhaust assembly 130 exhausts air to the drainage pipe 220, which speeds up the speed at which the mixed air flow of hydrogen and acid mist is discharged from the acid mist treatment tank 210, and reduces the risk of explosion caused by excessive hydrogen content in the reaction tank 110 mixing with air;

[0051] 3. The exhaust disk 232 is connected to the sealed bearing 231 and exhausts air through the diverter pipe 233, so that the exhaust disk 232 rotates to stir the alkali solution inside the acid mist treatment tank 210, so that the mixed air flow discharged from the diverter pipe 233 is fully in contact with the alkali solution, thereby achieving a better absorption effect of the acid mist in the mixed air flow;

[0052] 4. The filter layer assembly 240 can absorb the steam in the mixed air flow, reducing the steam from being discharged from the acid mist treatment tank 210, thereby filtering the mixed air flow and preventing the acid mist from being discharged into the air.

[0053] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A metal recovery device (10) for battery powder, characterized in that: It includes a reaction mechanism (100) and a filtering mechanism (200), The reaction mechanism (100) comprises a reaction tank (110), a stirring assembly (120) and an exhaust assembly (130); the reaction tank (110) is provided with a reaction chamber (1101); the reaction chamber (1101) is used to accommodate battery powder and a strong acid solution; the stirring assembly (120) is installed at the bottom of the reaction chamber (1101); and the exhaust assembly (130) is installed at the top of the reaction chamber (1101); The filtering mechanism (200) comprises an acid mist treatment tank (210), a drainage pipe (220), an air outlet assembly (230) and a filter layer assembly (240); the acid mist treatment tank (210) is provided with a filter chamber (2101); the air inlet end of the drainage pipe (220) is connected to the top of the reaction chamber (1101); the air outlet end of the drainage pipe (220) extends into the filter chamber (2101); the air outlet assembly (230) comprises a sealing bearing (231), an exhaust plate (232) and a diverter pipe (233); The sealing bearing (231) is installed at the air outlet end of the drainage pipe (220), the exhaust disk (232) is connected to the sealing bearing (231) and is connected to the drainage pipe (220), the diverter pipe (233) is obliquely arranged at the edge of the exhaust disk (232), one end of the diverter pipe (233) is connected to the exhaust disk (232), and the other end of the diverter pipe (233) is connected to the filter cavity (2101), and the filter layer assembly (240) is arranged on the top of the acid mist treatment tank (210).

2. The battery powder metal recovery device (10) according to claim 1, characterized in that: The filtering mechanism (200) further comprises a flow diversion assembly (250), the flow diversion assembly (250) comprising a first flow diversion plate (251) and a second flow diversion plate (252) located above the sealing bearing (231), the first flow diversion plate (251) being fixed to the outer surface of the drainage pipe (220), the second flow diversion plate (252) being fixed to the inner wall of the acid mist treatment tank (210), the first flow diversion plate (251) and the second flow diversion plate (252) being staggered in the vertical direction within the filtering cavity (2101), a gap being provided between the first flow diversion plate (251) and the inner wall of the acid mist treatment tank (210); a through hole being provided in the middle of the second flow diversion plate (252), the drainage pipe (220) being passed through the through hole, and a gap being provided between the drainage pipe (220) and the wall of the through hole.

3. The battery powder metal recovery device (10) according to claim 1, characterized in that: The filter layer assembly (240) comprises a limiting ring (241) and a filter cotton plate (242), wherein the number of the limiting rings (241) is two, the two limiting rings (241) are arranged on the top of the acid mist treatment tank (210), and the filter cotton plate (242) is clamped between the two limiting rings (241).

4. The battery powder metal recovery device (10) according to claim 3, characterized in that: The side of the filter cotton plate (242) adjacent to the exhaust disk (232) is a conical structure, and the side of the filter cotton plate (242) adjacent to the exhaust disk (232) is also provided with a flow blocking hole (2401).

5. The battery powder metal recovery device (10) according to claim 1, characterized in that: The filtering mechanism (200) further comprises a liquid discharge pipe (260) and a liquid injection pipe (270), wherein the liquid injection pipe (270) is connected to the filtering chamber (2101), the liquid injection pipe (270) is located above the exhaust plate (232), and the liquid discharge pipe (260) is connected to the bottom of the filtering chamber (2101).

6. The battery powder metal recovery device (10) according to claim 1, characterized in that: The bottom of the exhaust plate (232) is provided with an exhaust hole (2301).

7. The battery powder metal recovery device (10) according to claim 1, characterized in that: There are multiple diverter pipes (233), and the multiple diverter pipes (233) are arranged at intervals along the circumference of the exhaust disk (232). The inclination angles of the multiple diverter pipes (233) and the center lines of the corresponding exhaust disks (232) are the same.

8. The battery powder metal recovery device (10) according to claim 1, characterized in that: The stirring assembly (120) comprises a stirring motor (121) and a stirring blade (122), wherein the stirring motor (121) is mounted on the side wall of the reaction tank (110), and the stirring blade (122) is arranged in the reaction tank (110), and the stirring blade (122) is connected to the output shaft of the stirring motor (121), and the output shaft of the stirring motor (121) is arranged obliquely at the bottom of the reaction tank (110).

9. The battery powder metal recovery device (10) according to claim 1, characterized in that: The exhaust assembly (130) includes an air collecting hood (131) and an exhaust fan (132), wherein the air collecting hood (131) is covered on the top of the reaction tank (110), the air collecting hood (131) is connected to the reaction tank (110), the air inlet end of the drainage pipe (220) is connected to the top of the air collecting hood (131), and the exhaust fan (132) is installed in the air collecting hood (131).

10. The battery powder metal recovery device (10) according to claim 1, characterized in that: The reaction mechanism (100) further comprises a feed pipe (140) and a slag discharge pipe (150), wherein the feed pipe (140) is connected to the reaction tank (110), and the slag discharge pipe (150) is connected to the bottom of the reaction tank (110).

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